Add support for custom database type mapping

New pragma qualifier, map, and specifiers: as, to, from. New tests:
<database>/custom.

1 files changed, 77 insertions, 0 deletions

diff --git a/oracle/custom/traits.hxx b/oracle/custom/traits.hxx
new file mode 100644
index 0000000..8f3e81e
--- /dev/null
+++ b/oracle/custom/traits.hxx
@@ -0,0 +1,77 @@
+// file      : oracle/types/traits.hxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef TRAITS_HXX
+#define TRAITS_HXX
+
+#include <vector>
+#include <sstream>
+#include <cstring> // std::memcpy
+#include <cassert> // std::memcpy
+
+#include <odb/oracle/traits.hxx>
+
+namespace odb
+{
+  namespace oracle
+  {
+
+        template <>
+    class value_traits<std::vector<int>, id_string>
+    {
+    public:
+      typedef std::vector<int> value_type;
+      typedef value_type query_type;
+      typedef details::buffer image_type;
+
+      static void
+      set_value (value_type& v,
+                 const char* b,
+                 std::size_t n,
+                 bool is_null)
+      {
+        v.clear ();
+
+        if (!is_null)
+        {
+          // Array format is "n1,n2,n3...".
+          //
+          std::istringstream is (std::string (b, n));
+
+          for (char c; !is.eof (); is >> c)
+          {
+            v.push_back (int ());
+            is >> v.back ();
+          }
+        }
+      }
+
+      static void
+      set_image (char* b,
+                 std::size_t c,
+                 std::size_t& n,
+                 bool& is_null,
+                 const value_type& v)
+      {
+        is_null = false;
+        std::ostringstream os;
+
+        for (value_type::const_iterator i (v.begin ()), e (v.end ()); i != e;)
+        {
+          os << *i;
+
+          if (++i != e)
+            os << ',';
+        }
+
+        const std::string& s (os.str ());
+        n = s.size ();
+        assert (n <= c);
+        std::memcpy (b, s.c_str (), n);
+      }
+    };
+  }
+}
+
+#endif // TRAITS_HXX